From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 25214C433EF for ; Thu, 7 Oct 2021 16:58:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0E80D61040 for ; Thu, 7 Oct 2021 16:58:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243070AbhJGRAA (ORCPT ); Thu, 7 Oct 2021 13:00:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35178 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243005AbhJGQ7i (ORCPT ); Thu, 7 Oct 2021 12:59:38 -0400 Received: from mail-yb1-xb49.google.com (mail-yb1-xb49.google.com [IPv6:2607:f8b0:4864:20::b49]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C7D24C061771 for ; Thu, 7 Oct 2021 09:57:44 -0700 (PDT) Received: by mail-yb1-xb49.google.com with SMTP id d1-20020a056902060100b005b9c7c04351so8705605ybt.14 for ; Thu, 07 Oct 2021 09:57:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=M3h9TKgdHSfiKTDIQ0z7/CF+WOF6HDeemDyEQLR6wzg=; b=CPx45cCAbXs4beI5vqI3bDMLl1nHG5kYHnN8I9aSIJNM2mH2F1N5pLC8Apbqa9s9uB B6qbBXXlzT6q0ppgNAAXwFDZsk07PRU8amnVhqIWfdQIvx5lxzB28NWhfrpwWrOuTDHg g64JZSGe6f+selFNeFfw7pRQBGDs0SUBdzzWXvoF5MUxsofzTO6hO2R1zY/cHX+xHV9d BcDNYf+bcfDYFE0SfxZCdlYxlwLG+RpHhfW6ZSuW3FJIeZH4ungHlPcvrOtyFBGcI8Qd 9eLPteQqNxqx3TX9bRasf0qoew0xsje0tq2itCZdQM00QUe7LBc5VSIAug1Vae3npS3G ppSw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=M3h9TKgdHSfiKTDIQ0z7/CF+WOF6HDeemDyEQLR6wzg=; b=QbuJynux9AqebBzmE0kKeQ/j69/FqJniBGLPZy8u8WtHwlpkNsWQ7CdEucz3ludkx1 PhUyGUizZVnfgyFLkFDLBFrjnK5wwsH3q9JNLadYfSjJm06bQUeU4YTiHy5BVjxACIaw KNYPB/A07aPKXnNEOvFgMFJHOmp9ZjpuP5nkAmwDQbddCdJ67TAZdYV745W4B91gAmK9 k0ZlZcI6KqbKIKwd2tGwxi7SDKfHlfdcfyXe+orA62xgxMRMCMu4UXzN7AN1qSFgwGFT gvT47OIAcq44X05Q7Q6CNXva9TOaCS4eJzEt9TzI4cOmWH/Kqi4Nkh8xZRQxxTflHASB x/JQ== X-Gm-Message-State: AOAM531otZ5OmY1Z2XnUjQzQfEla+FAtwvafJDpi2yIYlFIm5b764PbP uBZ4k38GCXpHNrDWSMYcqolRVOszlNhx X-Google-Smtp-Source: ABdhPJzuGJx2Am1r55wvxfKewjJpzCgaApmPRDzJ9dJOb7XLe52tPxbBS7Rt0Li5G9tUcY5V4FtFoA66i4SG X-Received: from irogers.svl.corp.google.com ([2620:15c:2cd:202:fe85:5e36:cb6f:76bc]) (user=irogers job=sendgmr) by 2002:a25:b11b:: with SMTP id g27mr5882474ybj.13.1633625863924; Thu, 07 Oct 2021 09:57:43 -0700 (PDT) Date: Thu, 7 Oct 2021 09:56:32 -0700 In-Reply-To: <20211007165647.3514803-1-irogers@google.com> Message-Id: <20211007165647.3514803-7-irogers@google.com> Mime-Version: 1.0 References: <20211007165647.3514803-1-irogers@google.com> X-Mailer: git-send-email 2.33.0.882.g93a45727a2-goog Subject: [PATCH 06/21] perf metric: Add documentation and rename a variable. From: Ian Rogers To: Andi Kleen , Jiri Olsa , Jin Yao , Namhyung Kim , John Garry , Kajol Jain , "Paul A . Clarke" , Arnaldo Carvalho de Melo , Riccardo Mancini , Kan Liang , Peter Zijlstra , Ingo Molnar , Mark Rutland , Alexander Shishkin , Kees Cook , Sami Tolvanen , Nick Desaulniers , Andrew Morton , Jacob Keller , Zhen Lei , ToastC , Joakim Zhang , Felix Fietkau , Jiapeng Chong , Song Liu , Fabian Hemmer , Alexander Antonov , Nicholas Fraser , Adrian Hunter , Denys Zagorui , Wan Jiabing , Thomas Richter , Sumanth Korikkar , Heiko Carstens , Changbin Du , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org Cc: Stephane Eranian , Ian Rogers Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Documentation to make current functionality clearer. Rename a variable called 'metric' to 'metric_name' as it can be ambiguous as to whether a string is the name of a metric or the expression. Signed-off-by: Ian Rogers --- tools/perf/util/metricgroup.c | 59 ++++++++++++++++++++++++++++++++--- 1 file changed, 54 insertions(+), 5 deletions(-) diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c index 139f4a793f92..3e5f02938452 100644 --- a/tools/perf/util/metricgroup.c +++ b/tools/perf/util/metricgroup.c @@ -776,13 +776,27 @@ int __weak arch_get_runtimeparam(const struct pmu_event *pe __maybe_unused) struct metricgroup_add_iter_data { struct list_head *metric_list; - const char *metric; + const char *metric_name; struct expr_ids *ids; int *ret; bool *has_match; bool metric_no_group; }; +/** + * __add_metric - Add a metric to metric_list. + * @metric_list: The list the metric is added to. + * @pe: The pmu_event containing the metric to be added. + * @metric_no_group: Should events written to events be grouped "{}" or + * global. Grouping is the default but due to multiplexing the + * user may override. + * @runtime: A special argument for the parser only known at runtime. + * @mp: The pointer to a location holding the first metric added to metric + * list. It is initialized here if this is the first metric. + * @parent: The last entry in a linked list of metrics being + * added/resolved. This is maintained to detect recursion. + * @ids: Storage for parent list. + */ static int __add_metric(struct list_head *metric_list, const struct pmu_event *pe, bool metric_no_group, @@ -1076,7 +1090,7 @@ static int metricgroup__add_metric_sys_event_iter(const struct pmu_event *pe, struct metric *m = NULL; int ret; - if (!match_pe_metric(pe, d->metric)) + if (!match_pe_metric(pe, d->metric_name)) return 0; ret = add_metric(d->metric_list, pe, d->metric_no_group, &m, NULL, d->ids); @@ -1095,7 +1109,22 @@ static int metricgroup__add_metric_sys_event_iter(const struct pmu_event *pe, return ret; } -static int metricgroup__add_metric(const char *metric, bool metric_no_group, +/** + * metricgroup__add_metric - Find and add a metric, or a metric group. + * @metric_name: The name of the metric or metric group. For example, "IPC" + * could be the name of a metric and "TopDownL1" the name of a + * metric group. + * @metric_no_group: Should events written to events be grouped "{}" or + * global. Grouping is the default but due to multiplexing the + * user may override. + * @events: an out argument string of events that need to be parsed and + * associated with the metric. For example, the metric "IPC" would + * create an events string like "{instructions,cycles}:W". + * @metric_list: The list that the metric or metric group are added to. + * @map: The map that is searched for metrics, most commonly the table for the + * architecture perf is running upon. + */ +static int metricgroup__add_metric(const char *metric_name, bool metric_no_group, struct strbuf *events, struct list_head *metric_list, const struct pmu_events_map *map) @@ -1107,7 +1136,11 @@ static int metricgroup__add_metric(const char *metric, bool metric_no_group, int i, ret; bool has_match = false; - map_for_each_metric(pe, i, map, metric) { + /* + * Iterate over all metrics seeing if metric matches either the name or + * group. When it does add the metric to the list. + */ + map_for_each_metric(pe, i, map, metric_name) { has_match = true; m = NULL; @@ -1130,7 +1163,7 @@ static int metricgroup__add_metric(const char *metric, bool metric_no_group, .fn = metricgroup__add_metric_sys_event_iter, .data = (void *) &(struct metricgroup_add_iter_data) { .metric_list = &list, - .metric = metric, + .metric_name = metric_name, .metric_no_group = metric_no_group, .ids = &ids, .has_match = &has_match, @@ -1169,6 +1202,22 @@ static int metricgroup__add_metric(const char *metric, bool metric_no_group, return ret; } +/** + * metricgroup__add_metric_list - Find and add metrics, or metric groups, + * specified in a list. + * @list: the list of metrics or metric groups. For example, "IPC,CPI,TopDownL1" + * would match the IPC and CPI metrics, and TopDownL1 would match all + * the metrics in the TopDownL1 group. + * @metric_no_group: Should events written to events be grouped "{}" or + * global. Grouping is the default but due to multiplexing the + * user may override. + * @events: an out argument string of events that need to be parsed and + * associated with the metric. For example, the metric "IPC" would + * create an events string like "{instructions,cycles}:W". + * @metric_list: The list that metrics are added to. + * @map: The map that is searched for metrics, most commonly the table for the + * architecture perf is running upon. + */ static int metricgroup__add_metric_list(const char *list, bool metric_no_group, struct strbuf *events, struct list_head *metric_list, -- 2.33.0.882.g93a45727a2-goog